[BREAKING] remove renderName and nameBackground prop from TopNavBar.Brand

[balzss]

INSTUI-4017

BREAKING CHANGE: renderName and nameBackground prop is not available on TopNavBar.Brand anyomore

should only be merged right before the v9 release

test plan:

• check docs for TopNavBar: any mention of renderName or nameBackground for TopNavBar.Brand should be removed
• add renderName to <TopNavBar.Brand />: there should be a console error/warning about the deprecated prop with a url to the upgrade guide
• add nameBackground to <TopNavBar.Brand />: there should be a console error/warning about the deprecated prop with a url to the upgrade guide
• check the upgrade guide

[github-actions[bot]]

Preview URL: https://1468--preview-instui.netlify.app